Scrubbing brush



NOV. 19," 1935; I PETTY v 2,021,608

SCRUBBING BRUSH Filed Aug. 5, 1955 Hlll Illlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll llllllll !illlllllllllllllllllllllllllllllllllIllllllllllllll III In Patented Nov. 19, 1935 SCRUBBING BRUSH Edward L. Petty, Brazil, Ind., assignor; to Continental Car-Na-Var Corporation, Brazil, Ind.

Application August 5, 1935, Serial No. 34,666

4 Claims. (01. 15180) This invention relates to scrubbing brushes, particularly of the type adapted to be employed in conjunction with power driven portable units for the purpose of scrubbing rugs, floors, and the like. It is a primary object of my invention to provide a brush structure which upon revolving will carry and distribute a washing fluid over the top of the brush to give substantially an equal distribution of the fluid from the inner to the outer portion of the brush regardless of centrifugal action tending to throw the fluid principally to the outer portion of the brush.

It is a further primary object of my invention to provide a mounting of the scrubbing elements on the under side of the brush in such arrangement as to cooperate with the feeding of the fluid so that the tendency of the brush will be to retain the fluid thereunder rather than throwing it out from under the brush.

A still further primary object of the invention isto provide an outer circumferential fringe of bristles which may be depressed to extend later ally from the brush in order to permit the brush to scrub closely against baseboards and the like.

These and other objects and advantages of the invention will become apparent to those versed in the art from the following description of one particular form of my invention as illustrated by the accompanying drawing, in which Fig. 1 is a top plan view of a brush embodying,

my invention;

Fig. 2, a central vertical section through the brush on the line 22 in Fig. 1, and Fig. 3, a bottom plan view. I Like characters of reference indicate like parts in the several views in the drawing.

I form a head I0 which has a central boss H to which is attached a driving member l2. The head is provided with a peripheral upturned flange l3 and the annular surface between the flange l3 and the boss I I is formed to have a wide annular groove M in which are a plurality of depressed regions l5 each arcuate in formation and being non-radial of the head In. The regions l5 are in fact arranged in a more or less convolutedmanner to leave partitioning ribs l6 therebetween. The inner ends of these regions communicate with an annular depressed region of like depth immediately around the boss II. Each of these ribs I6 is hollowed out from the under side of the head ill to receive therein the upper looped ends of bristles I! which are secured in place by wire l8 threaded through holes in the ribs l6 and under the looped ends of the bristles. I provide a circumferential groove l9 the head and down under the loops and back up 5 again. The bristles 20 are preferably made to be longer than the bristles I! so that a circumferential marginal band of the longer bristles 20 is formed entirely around the brush to enclose the shorter bristles l1 therewithin.

In the groove I4 I provide a plurality of holes through the head. Also in the regions [5 I provide a plurality of holes in spacedapart relation, here shown as three holes 22 in each region I5.

In operation, fluid is allowed to drop into the groove l4 and the brush is revolved through the driving member l2 in a counter-clockwise direction so that the outer leading ends of the regions l5 are ahead of the inner ends of the re-' gions l5. v I

Normally centrifugal action set up by the revolving of the brush throws the fluid outwardly in the groove I4 into each of the regions l5 and would tend to further cause the fluid to travel quickly to the outer ends of those regions I 5. However, by reason of the positioning of the regions I5, a certain amount of centripetal action is set up tending to overcome in part the centrifugal action thereby slowing up the travel of the fluid to the outer ends of the regions l5 so 30 that the fluid will drop more or less uniformly downwardly through the head l0 through all of the holes provided in the head. In fact if there be any difference in distribution, more of the fluid will drop through the head toward the inner 35 ends of the regions l5 rather than have a majority of the fluid fly to the outer ends and then drop through. r

Since the bristles l1 extending below the head l0 follow the curvature of the regions I5, by reason of their being attached to follow the lanes of the ribs l6, fluid dropping through the holes 22 will drop between the arcuate rows of bristles II or flow theredown on the bristles. Now since the outer end of each row of bristles I1 is ahead 45 of its inner end, these various rows of bristles II will tend to pull the fluid inwardly toward the center of the brush rather than throw it outwardly were the bristles to be arranged concentrically about the axis of rotation of the brush. Preferably I provide an inner annular row of bristles 23 to trap or rather stop the inward flow of the fluid, this row of bristles 23 being secured within an under annular groove formed in the head. Of course in using the brush, it is moved bodily 55 along over the floor so that all areas of the floor will be ultimately scrubbed. As above indicated, the outer circumferential bristles 20 will upon pressure being applied to the head If), tend to spread outwardly to allow the bristles I! to come into contact with the floor. When these bristles 20 are thus pushed downwardly, they extend outwardly as indicated by the dash lines in Fig. 2 and thus protrude beyond the outer side of the head H] to permit scrubbing of corners such as those adjacent baseboards and the like. Furthermore this compressing of the bristles 20 to cause them to bend outwardly tends to form a washing fluid seal preventing flowing of the fluid.

under centrifugal action.

While I have herein shown and described my invention in the best form as'now known to me, it is obvious that structural changes may be made without departing from thespirit of the invention and I,- therefore, do not desire to be limited to this precise form beyond the limitations as may be imposed by the following claims.

I claim:

1. A revoluble scrubbing brush adapted to be employed with a scrubbing fluid poured onto the top side of the brush, comprising a head having on its upper side a wide annular groove and a plurality of arcuate depressed regions on said upper side within said groove, all of the regionshaving a plurality of fluid discharge holes in their under sides; an outer annular ring of bristles secured to and extending downwardly from the head; a, plurality of arcuate rows of bristles carried by'the head to extend downwardly therefrom within said outer ring, each of said arcuate rows being formed and spaced to follow the curvature of theregions on the upper side of the head; and a driving member to revolve the brush, and said regions being formed to have their outer ends spaced around ahead of their inner ends whenrthe, head is revolved whereby the side walls of said depressed regions. tend. in part to overcome the centrifugal effect on fluid in the groove.

2. A revoluble scrubbing brush adapted to be employed with ascrubbing fluid pouredonto the topside of the brush, comprising a head having on its upper side a wide annular groove and a plurality of arcuate depressed regions on said upper side within said groove, all of the regions having; aplurality of fluid discharge holes in their under sides; an outer annular ring of bristles secured to and extending downwardly from the. head; a. plurality of arcuate rows of bristles carried by the head to extend down- 'wardly therefrom within said outer ring. each of said, arcuate rows being formed and spaced to follow: the curvature ofthe regions: on the upper side of the head; and a driving member to revolve the brush, and said regions being formed to have their outer ends spaced around ahead of their inner ends when the head is revolved whereby the side walls of said depressed regions tend in part to overcome the centrifugal effect on fluid 5 in the groove; and an inner annular row of bristles tending to trap fluid between it and said outer row.

3. A revoluble scrubbing brush adapted to be employed with a scrubbing fluid poured onto the top side of the brush, comprising a head having on its upper side a wide annular groove and a plurality of arcuate depressed regions on Said upper side within said groove, all of the regions having a plurality of fluid discharge holes in their under sides; an outer annular ring of bristles securedto and extending downwardly from the head; a plurality of arcuate rows of bristles carried by the head to extend downwardly therefrom wi-thin'said outer ring, each of said arcuate rows being. formed and spaced to follow the curvature of the regions on the upper side of the head; and a driving member to revolve the brush, and said regions being formed to have their outer ends spaced around ahead of their inner ends when 252 the head is revolved whereby the side walls of said depressed regions tend in part to overcome the centrifugal efiect on fluid in the groove; said outer row of bristles having bristles longer than those in said arcuate rows whereby, upon contact of the inner bristles with the floor, the outer bristles will be flexed to extend outwardly.

4-. A revoluble scrubbing brush adapted to be employed with a scrubbing fluid poured onto the top side of the brush, comprising a head having on its upper side a wide annular groove and a plurality of arcuate depressed regions on said upper side within said groove, all of the regions having a plurality of fluid discharge holes in their under sides; an outer annular ring of bristlessecured to and extending downwardly from the head; a plurality of arcuate rows of bristles carried: by the head to extend downwardly therefrom within said outer ring, each of said arcuate rows-being formed and spaced to follow the curvature of the regions onthe upper side of the head; and a driving member to revolve the brush, and said regions being formed to have their outer ends spaced around ahead of their inner ends when the head is revolved whereby the side walls of said depressed regions tend in part to overcome the centrifugal effect on fluid in the groove; said depressed regions being defined by ribs therebetween, and said ribs being grooved from their under sides to receive the upper ends of said arcuate rows of bristles.

EDWARD L. PETTY. 

